Definition of Term

egg development

(English)
After fertilization, fish egg development until hatching can roughly be subdivided into eight stages‚Ē¨√°: early cleavage (1-64 cells), morula, blastula, gastrula, early embryo, tail-bud stage, tail-free stage and late embryo. In order to facilitate the determination of the age of fertilized eggs in field studies, staging with up to 30 steps were applied. (See also: egg, incubation period, larvalbase)